Buffers maintain their pH when small amounts of strong acids or bases are added. In biology, buffer solutions are used to provide a constant pH environment for biochemical processes. The pH often changes the environments of tissues and cells and can alter the activity of biomolecules. Buffers maintain the correct pH for proteins and oligonucleotides, and are especially important for techniques like electrophoresis.

Commonly used buffers in life science research share some of these characteristics:

  • A pKa value between 6.0 and 8.0
  • High water solubility
  • Minimal changes due to temperature and concentration
  • Limited effects due to ionic or salt composition of the solution

Browse our comprehensive selection of buffers including common buffers tris(hydroxymethyl)aminomethane (tris) and 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid (HEPES).

112 Results Found


Buffer for Electrophoresis.


Urea, Ultra-Pure (1lb Size)

Urea is the principal end product of nitrogen metabolism in most mammals, formed by the enzymatic reactions of the Kreb's cycle.

10X PBD (fr)

10X Phosphate-Buffered Detergent.


SDS EASY SOL 20% (fr)

SDS is an anionic detergent typically used to solubilize and denature proteins for electrophoresis. Most proteins bind SDS in a ratio of 1.4 grams SDS to 1 gram protein. The charges intrinsic to the protein become insignificant compared to the overall negative charge provided by the bound SDS.It is RNAse,DNAse, Protease free with an assay value of 20%.This solution is provided as a convenient ready-to-use firmat which eliminates the need to handle powdered SDS.